CN106644040A - Rotating shaft torsional oscillation detecting method and apparatus based on multiple sensors - Google Patents
Rotating shaft torsional oscillation detecting method and apparatus based on multiple sensors Download PDFInfo
- Publication number
- CN106644040A CN106644040A CN201610885874.9A CN201610885874A CN106644040A CN 106644040 A CN106644040 A CN 106644040A CN 201610885874 A CN201610885874 A CN 201610885874A CN 106644040 A CN106644040 A CN 106644040A
- Authority
- CN
- China
- Prior art keywords
- preset
- torsional
- sensors
- formula
- torsional oscillation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/02—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The embodiments of the invention disclose a rotating shaft torsional oscillation detecting method and an apparatus based on multiple sensors in order to solve the technical problems in the prior art that onsite rotating shaft torsional oscillation detecting is difficult and that the detection errors are big. With the method and apparatus, the online detecting becomes less difficult and the feasibility and testing accuracy for detecting torsional oscillation can be increased. The method of the invention comprises: based on an installation angle calibration mode, determining the installation angles of the plurality of sensors mounted on the surfaces of the inner coils of the measurement frame; extracting the parallel acquisition results of the single pulse calibrations on the surface of the rotating shafts arranged on the top of the sensors; and calculating the acquisition results for a torsional oscillation result.
Description
Technical field
The present invention relates to axial torsional vibration detection field, more particularly to a kind of shaft torsional detection method based on multisensor and
Device.
Background technology
There are many Diagnosing System for Oil Pump, such as steam turbine, gas turbine, generating in the industry such as generating, metallurgy, petrochemical industry, traffic
Machine, blower fan, compressor, motor, pump etc..It is various in mains frequency fluctuation, the fluctuation of load, foreign impacts, motor frequency conversion operation etc.
In the presence of factor, torsional resonances can be produced in rotating shaft.When torsional oscillation amplitude is larger, the torsion that can cause shafting is damaged.
The failure that twisting vibration is induced has very strong latency and disguise.Failure initial stage torsional oscillation is difficult to be found,
Failure once enters middle and advanced stage, frequently can lead to the generation of the serious accidents such as big axle and leaf destruction, fault harm and caused
Loss it is larger.Torsional oscillation detection technique and device are extremely important for the safe and stable operation of protection equipment.
Torsional oscillation detection at present mainly has following several method：
1st, the indirect method of measurement.Foil gauge is installed on axle surface, pulsator shaft moment of torsion is measured using Strain Method, then turned round by actual measurement
Square and shafting model, are calculated shafting torsional oscillation.This is a kind of torsional oscillation Indirect Detecting Method based on strain.
2nd, contactless (impulse method).Toothed disc or magnetic links, reflecting strips for being evenly arranged etc. are installed on the rotating shaft, are used
Eddy current sensor or reluctive transducer, electro-optical pickoff alignment toothed disc, magnetic links, reflecting strips etc..Rotating shaft rotates
During, series of pulses signal is experienced and exported to sensor.During without torsional oscillation, pulse interval is uniform.There is torsional oscillation in rotating shaft
When, because instantaneous angular velocity, the pulse interval of sensor output is uneven.On this basis, scheduling algorithm,
Torsional vibration signals can be extracted from non-uniform spacing pulse signal.This measuring method only needs to 1 sensor, but needs
Magnetic links, reflecting strips that toothed disc or plural number are spacedly distributed etc. are arranged on axle.During using gear method, need to install special on axle
The toothed disc do not processed, does not possess such mounting condition sometimes.The error of division of the toothed disc at point faying face is larger, meeting
Measurement result is produced a very large impact, torsional vibration signals are possible to be covered completely in burr signal.Using magnetic links or reflective
During bar pattern, the magnetic links or reflecting strips that equal indicative interval is arranged on axle are needed, the required precision to indexing is very high, and scene has
When be difficult to ensure that.
3rd, contactless (laser method).The method is based on laser doppler, when irradiating rotor end-face using laser beam
The doppler shift effect of generation is measuring torsional oscillation.When laser beam is irradiated to axle surface, the linear velocity on axle surface produces scattered light
Raw Doppler frequency shift, the instant value of frequency shift amount characterizes the instantaneous angular velocity of axle, removes DC component, so that it may obtain the torsion of rotor
Vibration response.The method can realize the absolute measurement of torsional oscillation, but certainty of measurement is by Lateral Vibration of Rotor, rotor surface deviation from circular from
Affect larger, measuring apparatus are expensive.
The content of the invention
A kind of shaft torsional detection method based on multisensor and device are embodiments provided, is solved existing
The technical problem that shaft torsional Site Detection is difficult in technology and measure error is big.
A kind of shaft torsional detection method and device based on multisensor provided in an embodiment of the present invention, including：
A kind of shaft torsional detection method based on multisensor, including：
Measurement support, and with measurement support for concentric circles position relationship rotating shaft；
Included based on the shaft torsional detecting step of multisensor：
Each installation that mode determines a plurality of sensors for being installed on measurement support inner peripheral surface is demarcated according to setting angle
Angle；
The parallel acquisition result that a plurality of sensors are marked to the individual pulse for being preset at rotating shaft surface is extracted, to collection knot
Fruit carries out being calculated torsional oscillation result.
Preferably, mode is demarcated according to setting angle and determines a plurality of sensors that are installed on measurement support inner peripheral surface
Include before each setting angle：
According to rotating shaft measurement surface, it is determined that the measurement support of the corresponding bore being made up of mounting ring and base；
The sensor being installed on hole is determined according to a plurality of equally distributed holes in mounting ring；
Wherein, the number order of sensor is designated as i with the axis of rotation sequence consensus in support, the numbering of sensor is measured
=1,2 ..., n, wherein n are number of sensors.
Preferably, the parallel acquisition result that a plurality of sensors are marked to the individual pulse for being preset at rotating shaft surface is extracted,
Collection result is carried out being calculated before torsional oscillation result also to be included：
It is determined that being preset in the position of the pulse labeling of rotating shaft measurement surface, pulse labeling includes magnetic links, iron plate or reflective
Bar.
Preferably, the parallel acquisition result that a plurality of sensors are marked to individual pulse is extracted, collection result is counted
Calculation obtains torsional oscillation result to be included：
The parallel acquisition result that a plurality of sensors are marked to individual pulse is extracted, and parallel acquisition result is changed
Export into after standard signal；
Outputting standard signal is carried out into multichannel pulse signal acquisition by data collecting card；
Torsional vibration signals are extracted from multichannel pulse signal, carries out being calculated torsional oscillation result.
Preferably, setting angle is demarcated mode and is included：
Rotating speed during note rotating shaft low speed rotation is ω ', on the basis of the sensor that numbering is 1, gathers and record each biography
Sensor output pulse signal, is designated as L'i, i=1,2 ..., n；
Pulse signal is taken by negative moment point is rotated forward as triggering datum mark, the note triggered time is Ti', i=1,2 ..., n,
Adjacent sensors pulse signal L' is calculated by preset first formulai,L'i+1Between time difference, preset first formula
For：
Δt′i=T 'i+1-Ti', i=1,2 ..., n.
Arc length Δ θ on circumferencial direction between any two sensor is calculated by preset second formulai, preset second is public
Formula is：
Δθi=ω1·Δt′i, i=1,2 ..., n.
It is 0 ° that note numbering is the setting angle of 1 sensor, and by preset 3rd formula the installation of remaining sensor is obtained
Angle, θi, preset 3rd formula is：
Preferably, torsional vibration signals are extracted from multichannel pulse signal, carrying out being calculated torsional oscillation result includes：
On the basis of the sensor that numbering is 1, gather and record each sensor during rotating shaft rotates a circle and export pulse
Signal, is designated as Li, it is T that i=1 ..., n takes pulse signal by negative moment point is rotated forward as datum mark, note triggered time is triggeredi, i
=1 ..., n, adjacent sensors pulse signal L is calculated by preset 4th formulai, Li+1Between time difference Δ ti, i=
1 ..., n, preset 4th formula is：
Δti=Ti+1-Ti, i=1,2 ..., n.
Instantaneous angular velocity ω during rotating a circle is calculated by preset 6th formulai, preset 6th formula is：
By taking same method, in the follow-on test plural number cycle, the instantaneous angular velocity signal in the surveyed time period can be obtained
ωi, i=1,2 ..., N, wherein, N is total sampling number.The flat of instantaneous angular velocity signal is calculated by preset 6th formula
AveragePreset 6th formula is：
Torsional oscillation angular velocity signal is calculated by preset 7th formulaPreset 7th formula is：
Torsional oscillation angular velocity signal is integrated by preset 8th formula, obtains torsional angle displacement signalPreset 8th formula
For：
A kind of torsional oscillation detection means, including：
Determining unit, for determining the setting angle of a plurality of sensors being installed in measurement support inner peripheral surface；
Extraction unit, for extracting the parallel acquisition result that a plurality of sensors are marked to individual pulse；
Computing unit, for carrying out being calculated torsional oscillation result to collection result.
Preferably, determining unit includes：
First determination subelement, for determining the measurement support of correspondence bore according to rotating shaft measurement surface；
Second determination subelement, for determining the pulse labeling for being preset in rotating shaft measurement surface；
Numbered cell, for being numbered to sensor；
3rd determination subelement, for determining according to setting angle demarcation mode answering for measurement support inner peripheral surface is installed on
Each setting angle of several sensors.
Preferably, extraction unit includes：
First extracts subelement, for extracting the collection result of sensor, and exports after being changed；
Second extracts subelement, for extracting torsional vibration signals from multichannel pulse signal.
Preferably, computing unit includes：
First computation subunit, the setting angle of calculated complex sensor by way of setting angle demarcation；
Torsional vibration signals are calculated and integrated and obtained torsional oscillation result by the second computation subunit.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
A kind of shaft torsional detection method based on multisensor and device are embodiments provided, including：Pass through
Torsional oscillation detection means according to setting angle demarcate mode determine be installed on measurement support inner peripheral surface a plurality of sensors it is each
Setting angle；By extracting a plurality of sensors to being preset at the individual pulse on the rotating shaft surface by torsional oscillation detection means
The parallel acquisition result of mark, carries out being calculated torsional oscillation result to the collection result, solves rotating shaft in prior art and turns round
The big technical problem of Site Detection difficulty and the measure error of shaking, reduces on-the-spot test difficulty, improves the feasible of torsional oscillation detection
Property and measuring accuracy, be particularly suited for rotating machinery torsional oscillation detection and analyze, and then help unit carry out torsional state assessment.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
A kind of one flow process of shaft torsional detection method based on multisensor that Fig. 1 is provided for present invention enforcement is illustrated
Figure；
A kind of another flow process for shaft torsional detection method based on multisensor that Fig. 2 is provided for present invention enforcement is shown
It is intended to；
A kind of one structural representation of torsional oscillation detection means that Fig. 3 is provided for present invention enforcement；
A kind of another structural representation for torsional oscillation detection means that Fig. 4 is provided for present invention enforcement；
The sensor output pulse signal that Fig. 5 is arrived for the synchronous acquisition that present invention enforcement is provided (during without torsional oscillation)；
The emulation torsional vibration signals that Fig. 6 is provided for present invention enforcement；
Multisensor output pulse signal in the case of the shaft torsional that Fig. 7 is provided for present invention enforcement (under torsional mode)；
The torsional vibration signals extracted from the pulse spacing that Fig. 8 is provided for present invention enforcement；
Fig. 9 is the entity structure schematic diagram of measurement support provided in an embodiment of the present invention.
Illustrate, A1～An sensors, 1 measurement support, 2 pulse labelings, 3 rotating shafts.
Specific embodiment
A kind of shaft torsional detection method based on multisensor and device are embodiments provided, it is existing for solving
There is the technical problem that shaft torsional Site Detection is difficult and measure error is big in technology, reduce on-the-spot test difficulty, improve and turn round
Shake the feasibility and measuring accuracy of detection.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described, it is clear that disclosed below to the technical scheme in the embodiment of the present invention
Embodiment be only a part of embodiment of the invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Refer to figure one, a kind of shaft torsional detection method based on multisensor provided in an embodiment of the present invention, including：
101st, according to setting angle demarcate mode determine be installed on measurement support inner peripheral surface a plurality of sensors it is each
Setting angle；
In actual applications, measurement support 1 is fixed on into the outside of rotating shaft 3, measurement support 1 is hollow structure, measures support 1
Bore it is corresponding with the diameter of rotating shaft 3, both be concentric circles position relationship.A plurality of 1～An of sensors A are being installed on into survey
Before the amount inner peripheral surface of support 1, first determined according to setting angle demarcation mode and be installed on a plurality of of the measurement inner peripheral surface of support 1
Each setting angle of 1～An of sensors A.Wherein, setting angle demarcation mode is as follows：
Rotating speed during note 3 low speed rotation of rotating shaft is ω ', on the basis of the sensors A 1 that numbering is 1, gathers and records each
Sensor output pulse signal, is designated as L'i, i=1,2 ..., n；
Pulse signal is taken by negative moment point is rotated forward as triggering datum mark, the note triggered time is Ti', i=1,2 ..., n,
Adjacent sensors pulse signal L' is calculated by preset first formulai,L'i+1Between time difference, preset first formula
For：
Δt′i=T 'i+1-Ti', i=1,2 ..., n.
Arc length Δ θ on circumferencial direction between any two sensor is calculated by preset second formulai, preset second is public
Formula is：
Δθi=ω1·Δt′i, i=1,2 ..., n.
It is 0 ° that note numbering is the setting angle of 1 sensors A 1, and by preset 3rd formula the peace of remaining sensor is obtained
Dress angle, θi, preset 3rd formula is：
102nd, the parallel acquisition result that a plurality of sensors are marked to the individual pulse for being preset at rotating shaft surface is extracted, it is right
Collection result carries out being calculated torsional oscillation result.
After a plurality of 1～An of sensors A to be installed on the measurement inner peripheral surface of support 1 according to setting angle demarcation mode,
The parallel acquisition result of individual pulse mark 1 on a plurality of 1～An of sensors A countershafts 3 is extracted, collection result is calculated
Obtain torsional oscillation result.
It is more than, to a kind of detailed description of the shaft torsional detection method based on multisensor, below one kind will to be based on
The process of the shaft torsional detection method of multisensor is described in detail.Refer to Fig. 2, provided in an embodiment of the present invention one
Another embodiment based on the shaft torsional detection method of multisensor is planted, including：
201st, according to rotating shaft measurement surface, it is determined that the measurement support of the corresponding bore being made up of mounting ring and base；
Firstly, it is necessary to according to the measurement surface of rotating shaft 3, it is determined that the measurement support 1 of correspondence bore, wherein, measurement support 1 is by setting
It is made up of a plurality of equally distributed mounting rings and base.
202nd, the sensor being installed on hole is determined according to a plurality of equally distributed holes in mounting ring；
It is determined that after the measurement support 1 of correspondence bore, uniform point of plural number in the measurement mounting ring of support 1 is installed on as needed
A plurality of 1～An of sensors A on the hole of cloth, by 1～An of sensors A along with measurement support 1 in the rotation of rotating shaft 3 order one
The rotation direction numbering of cause, is designated as i=1,2 ..., n, and wherein n is number of sensors.
203rd, according to setting angle demarcate mode determine be installed on measurement support inner peripheral surface a plurality of sensors it is each
Setting angle；
After being numbered to sensor, determined according to setting angle demarcation mode and be installed on the measurement inner peripheral surface of support 1
A plurality of 1～An of sensors A each setting angle, in order to the accurate installation of sensor, reduce the error of measurement.Wherein,
Setting angle demarcates mode to be included：
Rotating speed during note 3 low speed rotation of rotating shaft is ω ', on the basis of the sensors A 1 that numbering is 1, gathers and records each
Sensor output pulse signal, is designated as L'i, i=1,2 ..., n；
Pulse signal is taken by negative moment point is rotated forward as triggering datum mark, the note triggered time is Ti', i=1,2 ..., n,
Adjacent sensors pulse signal L' is calculated by preset first formulai,L'i+1Between time difference, preset first formula
For：
Δt′i=T 'i+1-Ti', i=1,2 ..., n.
Arc length Δ θ on circumferencial direction between any two sensor is calculated by preset second formulai, preset second
Formula is：
Δθi=ω1·Δt′i, i=1,2 ..., n.
It is 0 ° that note numbering is the setting angle of 1 sensors A 1, and by preset 3rd formula the peace of remaining sensor is obtained
Dress angle, θi, preset 3rd formula is：
It should be noted that determining after sensor setting angle installed, require according to sensor technology, adjustment
Distance and setting angle of 1～An of sensors A heads to the surface of rotating shaft 3, it is ensured that 1～An of sensors A can accurately receive arteries and veins
Rush signal.Wherein, 1～An of sensors A is tightened by bolts on support.
204th, the position of the pulse labeling for being preset in rotating shaft measurement surface is determined；
The preset of pulse labeling 1 is determined in the measurement surface of rotating shaft 3 to be measured, pulse labeling 1 only needs mark one,
Wherein, pulse labeling 1 can be reflecting strips, iron plate or magnetic links etc..The selection of 1～An of pulse labeling 1 and sensors A includes electric whirlpool
Streaming sensor+iron plate, reluctive transducer+magnetic links, the integrated mode of electro-optical pickoff+reflecting strips, but not only limit
In this.
205th, the parallel acquisition result that a plurality of sensors are marked to individual pulse is extracted, and parallel acquisition result is carried out
It is converted into being exported after standard signal；
Individual pulse mark 1 is synchronized in multiple 1～An of sensors A, after parallel acquisition, according to 1～An of sensors A
Type, principle and its technical requirements, extract parallel acquisition results of the 1～An of sensors A to individual pulse mark 1, and pair simultaneously
Row collection result carries out being converted into being exported to data collecting card after 0-10V standard signals.
206th, outputting standard signal is carried out into multichannel pulse signal acquisition by data collecting card；
Sensors A 1～An output signals are connected into multichannel, high sampling rate simultaneous data-acquisition, and are adopted by data
Truck carries out multichannel pulse signal acquisition.In order to ensure certainty of measurement, the sample frequency suggestion of capture card is more than 250KHz, adopts
The port number suggestion of truck is more than 8.
207th, torsional vibration signals are extracted from multichannel pulse signal, carries out being calculated torsional oscillation result.
Torsional vibration signals are extracted in the multichannel pulse signal synchronously detected from data collecting card, algorithm is as follows：
On the basis of the sensors A 1 that numbering is 1, each 1～An of sensors A during rotating shaft 3 rotates a circle is gathered and recorded
Output pulse signal, is designated as Li, i=1 ..., n take pulse signal by rotate forward negative moment point as triggering datum mark, note triggering
Time is Ti, i=1 ..., n is calculated adjacent sensors pulse signal L by preset 4th formulai, Li+1Between the time difference
Δti, i=1 ..., n, preset 4th formula is：
Δti=Ti+1-Ti, i=1,2 ..., n.
Instantaneous angular velocity ω during rotating a circle is calculated by preset 5th formulai, preset 5th formula is：
By taking same method, in the follow-on test plural number cycle, the instantaneous angular velocity signal in the surveyed time period can be obtained
ωi, i=1,2 ..., N, wherein, N is total sampling number.The flat of instantaneous angular velocity signal is calculated by preset 6th formula
AveragePreset 6th formula is：
Torsional oscillation angular velocity signal is calculated by preset 7th formulaPreset 7th formula is：
Torsional oscillation angular velocity signal is integrated by preset 8th formula, obtains torsional angle displacement signalPreset 8th formula
For：
It is more than to a kind of process institute of the shaft torsional detection method based on multisensor provided in an embodiment of the present invention
The detailed description for carrying out, will be described below to a kind of structure of torsional oscillation detection means.Provided in an embodiment of the present invention one
Planting torsional oscillation detection means includes：
Determining unit 301, for determining the setting angle of a plurality of sensors being installed in measurement support inner peripheral surface；
Extraction unit 302, for extracting the parallel acquisition result that a plurality of sensors are marked to individual pulse；
Computing unit 303, for carrying out being calculated torsional oscillation result to collection result.
It is more than the description that a kind of structure of torsional oscillation detection means provided in an embodiment of the present invention is carried out, below will be to turning round
The structure of detection means of shaking makes a more detailed description.A kind of torsional oscillation detection means provided in an embodiment of the present invention, including：
Determining unit 401, for determining the setting angle of a plurality of sensors being installed in measurement support inner peripheral surface,
Specifically include：
First determination subelement 4011, for determining the measurement support 1 of correspondence bore according to the measurement surface of rotating shaft 3；
Second determination subelement 4012, for determining the pulse labeling 1 for being preset in the measurement surface of rotating shaft 3；
Numbered cell 4013, for being numbered to sensor；
3rd determination subelement 4014, for determining according to setting angle demarcation mode the measurement inner ring table of support 1 is installed on
Each setting angle of a plurality of 1～An of sensors A in face.
Extraction unit 402, for extracting the parallel acquisition result that a plurality of sensors are marked to individual pulse, concrete bag
Include：
First extracts subelement 4021, for extracting the collection result of 1～An of sensors A, and exports after being changed；
Second extracts subelement 4022, for extracting torsional vibration signals from multichannel pulse signal.
Computing unit 403, for carrying out being calculated torsional oscillation result to collection result, specifically includes：
First computation subunit 4031, for the peace of 1～An of calculated complex sensors A by way of setting angle demarcation
Dress angle；
Second computation subunit 4032, for being calculated torsional vibration signals and being integrated torsional oscillation result is obtained.
Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be described here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematic, for example, the unit
Divide, only a kind of division of logic function can have other dividing mode, such as multiple units or component when actually realizing
Can with reference to or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or
The coupling each other for discussing or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
It is described as separating component explanation unit can be or may not be it is physically separate, as unit
The part of display can be or may not be physical location, you can with positioned at a place, or can also be distributed to many
On individual NE.Some or all of unit therein can be according to the actual needs selected to realize this embodiment scheme
Purpose.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit both can be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, during a computer read/write memory medium can be stored in.Based on such understanding, technical scheme is substantially
The part for contributing to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including plural number instruction is used so that a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the invention
Portion or part steps.And aforesaid storage medium includes：USB flash disk, portable hard drive, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, above example only to illustrate technical scheme, rather than a limitation；Although with reference to front
State embodiment to be described in detail the present invention, it will be understood by those within the art that：It still can be to front
State the technical scheme described in each embodiment to modify, or equivalent is carried out to which part technical characteristic；And these
Modification is replaced, and does not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (10)
1. a kind of shaft torsional detection method based on multisensor, including：Measurement support, and be concentric with the measurement support
The rotating shaft of circle position relationship, it is characterised in that included based on the shaft torsional detecting step of multisensor：
Each installation that mode determines a plurality of sensors for being installed on the measurement support inner peripheral surface is demarcated according to setting angle
Angle；
The parallel acquisition result that a plurality of sensors are marked to the individual pulse for being preset at the rotating shaft surface is extracted, to institute
Stating collection result carries out being calculated torsional oscillation result.
2. the shaft torsional detection method based on multisensor according to claim 1, it is characterised in that described according to peace
Dress angle calibration mode determines to be installed on before each setting angle of a plurality of sensors of the measurement support inner peripheral surface wraps
Include：
According to rotating shaft measurement surface, it is determined that the measurement support of the corresponding bore being made up of mounting ring and base；
The sensor being installed on the hole is determined according to a plurality of equally distributed holes in the mounting ring；
Wherein, the number order of the sensor and the axis of rotation sequence consensus measured in support, the sensor
Numbering is designated as i=1,2 ..., n, and wherein n is the number of sensors.
3. the shaft torsional detection method based on multisensor according to claim 1, it is characterised in that the extraction is answered
The parallel acquisition result that several sensors are marked to the individual pulse for being preset at the rotating shaft surface, to the collection result
Carrying out being calculated before torsional oscillation result also includes：
It is determined that be preset in the position of the pulse labeling of the rotating shaft measurement surface, the pulse labeling include magnetic links, iron plate or
Reflecting strips.
4. the shaft torsional detection method based on multisensor according to claim 1, it is characterised in that the extraction institute
The parallel acquisition result that a plurality of sensors are marked to individual pulse is stated, the collection result is carried out being calculated torsional oscillation result
Including：
The parallel acquisition result that a plurality of sensors are marked to individual pulse is extracted, and the parallel acquisition result is carried out
It is converted into being exported after standard signal；
Outputting standard signal is carried out into multichannel pulse signal acquisition by data collecting card；
Torsional vibration signals are extracted from the multichannel pulse signal, carries out being calculated torsional oscillation result.
5. the shaft torsional detection method based on multisensor according to claim 1, it is characterised in that the established angle
Scale determines mode to be included：
Rotating speed during note rotating shaft low speed rotation is ω ', on the basis of the sensor that numbering is 1, gathers and record each sensor
Output pulse signal, is designated as L'i, i=1,2 ..., n；
Pulse signal is taken by negative moment point is rotated forward as triggering datum mark, the note triggered time is Ti', i=1,2 ..., n, by pre-
Put the first formula and be calculated adjacent sensors pulse signal L'i,L'i+1Between time difference, preset first formula is：
Δt′i=T 'i+1-Ti', i=1,2 ..., n.
Arc length Δ θ on circumferencial direction between any two sensor is calculated by preset second formulai, described preset second is public
Formula is：
Δθi=ω1·Δt′i, i=1,2 ..., n.
It is 0 ° that note numbering is the setting angle of 1 sensor, and by preset 3rd formula the setting angle of remaining sensor is obtained
θi, preset 3rd formula is：
6. the shaft torsional detection method based on multisensor according to claim 5, it is characterised in that described from described
Torsional vibration signals are extracted in multichannel pulse signal, carrying out being calculated torsional oscillation result includes：
On the basis of the sensor that numbering is 1, each sensor output pulse signal during rotating shaft rotates a circle is gathered and records,
It is designated as Li, it is T that i=1 ..., n takes pulse signal by negative moment point is rotated forward as datum mark, note triggered time is triggeredi, i=
1 ..., n, adjacent sensors pulse signal L is calculated by preset 4th formulai, Li+1Between time difference Δ ti, i=
1 ..., n, preset 4th formula is：
Δti=Ti+1-Ti, i=1,2 ..., n.
Instantaneous angular velocity ω during rotating a circle is calculated by preset 5th formulai, preset 6th formula is：
By taking same method, in the follow-on test plural number cycle, the instantaneous angular velocity signal ω in the surveyed time period can be obtainedi,i
=1,2 ..., N, wherein, N is total sampling number.The mean value of instantaneous angular velocity signal is calculated by preset 6th formulaPreset 6th formula is：
Torsional oscillation angular velocity signal is calculated by preset 7th formulaPreset 7th formula is：
Torsional oscillation angular velocity signal is integrated by preset 8th formula, obtains torsional angle displacement signalPreset 8th formula
For：
7. a kind of torsional oscillation detection means, it is characterised in that include：
Determining unit, for determining the setting angle of a plurality of sensors being installed in measurement support inner peripheral surface；
Extraction unit, for extracting the parallel acquisition result that a plurality of sensors are marked to individual pulse；
Computing unit, for carrying out being calculated torsional oscillation result to the collection result.
8. torsional oscillation detection means according to claim 7, it is characterised in that the determining unit includes：
First determination subelement, for determining the measurement support of correspondence bore according to rotating shaft measurement surface；
Second determination subelement, for determining the pulse labeling for being preset in the rotating shaft measurement surface；
Numbered cell, for being numbered to sensor；
3rd determination subelement, for determining according to setting angle demarcation mode answering for the measurement support inner peripheral surface is installed on
Each setting angle of several sensors.
9. torsional oscillation detection means according to claim 7, it is characterised in that the extraction unit includes：
First extracts subelement, for extracting the collection result of sensor, and exports after being changed；
Second extracts subelement, for extracting torsional vibration signals from multichannel pulse signal.
10. torsional oscillation detection means according to claim 7, it is characterised in that the computing unit includes：
First computation subunit, calculates the setting angle of a plurality of sensors by way of setting angle demarcation；
Torsional vibration signals are calculated and integrated and obtained torsional oscillation result by the second computation subunit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610885874.9A CN106644040B (en) | 2016-10-10 | 2016-10-10 | Rotating shaft torsional vibration detection method and device based on multiple sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610885874.9A CN106644040B (en) | 2016-10-10 | 2016-10-10 | Rotating shaft torsional vibration detection method and device based on multiple sensors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106644040A true CN106644040A (en) | 2017-05-10 |
| CN106644040B CN106644040B (en) | 2020-08-14 |
Family
ID=58853926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610885874.9A Active CN106644040B (en) | 2016-10-10 | 2016-10-10 | Rotating shaft torsional vibration detection method and device based on multiple sensors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106644040B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389181A (en) * | 2017-08-25 | 2017-11-24 | 杭州电子科技大学 | A kind of torsional oscillation detection method and its sensor of application |
| CN109163797A (en) * | 2018-09-26 | 2019-01-08 | 重庆齿轮箱有限责任公司 | One kind being based on pulsed shafting torsional vibration test system and method |
| CN111380603A (en) * | 2018-12-29 | 2020-07-07 | 上海齐耀系统工程有限公司 | Torsional vibration monitoring device for diesel engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5253531A (en) * | 1992-04-10 | 1993-10-19 | Walker Dana A | System and method for monitoring torsional vibrations and operating parameters of rotating shafts |
| CN101545824A (en) * | 2008-03-25 | 2009-09-30 | 唐德尧 | Fault diagnosis technology for mechanical tower |
| CN201408075Y (en) * | 2009-05-19 | 2010-02-17 | 中国船舶重工集团公司第七一一研究所 | Cam-type torsional vibration sensor and torsional vibration measuring instrument |
| CN103925988A (en) * | 2014-04-25 | 2014-07-16 | 哈尔滨工程大学 | Method for measuring torsional vibration of shafting |
| CN104266813A (en) * | 2014-10-29 | 2015-01-07 | 吉林大华机械制造有限公司 | Magnetic torsional vibration exciter and magnetic torsional vibration exciting system |
-
2016
- 2016-10-10 CN CN201610885874.9A patent/CN106644040B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5253531A (en) * | 1992-04-10 | 1993-10-19 | Walker Dana A | System and method for monitoring torsional vibrations and operating parameters of rotating shafts |
| CN101545824A (en) * | 2008-03-25 | 2009-09-30 | 唐德尧 | Fault diagnosis technology for mechanical tower |
| CN201408075Y (en) * | 2009-05-19 | 2010-02-17 | 中国船舶重工集团公司第七一一研究所 | Cam-type torsional vibration sensor and torsional vibration measuring instrument |
| CN103925988A (en) * | 2014-04-25 | 2014-07-16 | 哈尔滨工程大学 | Method for measuring torsional vibration of shafting |
| CN104266813A (en) * | 2014-10-29 | 2015-01-07 | 吉林大华机械制造有限公司 | Magnetic torsional vibration exciter and magnetic torsional vibration exciting system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389181A (en) * | 2017-08-25 | 2017-11-24 | 杭州电子科技大学 | A kind of torsional oscillation detection method and its sensor of application |
| CN107389181B (en) * | 2017-08-25 | 2019-08-06 | 杭州电子科技大学 | A kind of torsional oscillation detection method and its sensor of application |
| CN109163797A (en) * | 2018-09-26 | 2019-01-08 | 重庆齿轮箱有限责任公司 | One kind being based on pulsed shafting torsional vibration test system and method |
| CN111380603A (en) * | 2018-12-29 | 2020-07-07 | 上海齐耀系统工程有限公司 | Torsional vibration monitoring device for diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106644040B (en) | 2020-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103026085B (en) | Method for detecting damage of bearing | |
| EP2259033B1 (en) | Angular and torsional vibration monitoring of rotordynamic systems | |
| EP2294287B1 (en) | Method and device for detecting cracks in compressor blades | |
| CN101750198B (en) | Method for measuring corresponding phase positions of vibration signals of different measuring points of rotary machine | |
| CN100468036C (en) | Detection device and method for fault of engine fuel system | |
| CN105466550B (en) | Non-homogeneous lack sampling blade tip-timing vibration signal reconstruction method and its device | |
| Cheng et al. | Envelope deformation in computed order tracking and error in order analysis | |
| CN108731896B (en) | Vibration monitoring device for movable blade of gas turbine compressor | |
| CN110553844B (en) | Method and system for detecting misalignment fault of rotary machine | |
| CN105675113B (en) | Rotating machinery angular domain vibration signal acquisition device based on microsensor and method | |
| CN106644040A (en) | Rotating shaft torsional oscillation detecting method and apparatus based on multiple sensors | |
| CN104296927B (en) | Electric main shaft dynamic balance performance test experimental system | |
| CN201615907U (en) | Low angular rate detection device for rotating stage | |
| CN104089693B (en) | Rotation shaft torsional vibration modality online measurement method for turbo generator set | |
| CN103217545B (en) | Method for judging fault tolerance and abnormality of rotating speed signal of synchronous motor | |
| CN104034407A (en) | Method for reducing periodic error in rotating machinery torsional vibration signal pulse measuring method | |
| CN105352713A (en) | Method used for realizing blade fatigue crack detection through static blade displacement detection | |
| CN105628176A (en) | Rotation machinery torsional vibration signal collection analysis method | |
| CN105203794A (en) | Electric generator rotation speed measuring system and method | |
| CN104297003A (en) | Fault monitoring method of bogie rotating part based on dynamic alarm threshold values | |
| CN104792655B (en) | A kind of density sensing system | |
| CN104101464A (en) | Multi-wheel-disc rotor dynamic balancing test method based on rotating coordinate system | |
| CN105572411A (en) | Differential type anti-strong-interference real time velometer based on Arduino, and control method thereof | |
| CN104090126A (en) | Accelerometer bandwidth testing method | |
| CN103513062A (en) | Contrast test device of speed sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |